CN108388004B - A kind of starlight grade high definition day and night confocal optics camera lens - Google Patents
A kind of starlight grade high definition day and night confocal optics camera lens Download PDFInfo
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- CN108388004B CN108388004B CN201810254121.7A CN201810254121A CN108388004B CN 108388004 B CN108388004 B CN 108388004B CN 201810254121 A CN201810254121 A CN 201810254121A CN 108388004 B CN108388004 B CN 108388004B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/008—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras designed for infrared light
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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Abstract
The present invention provides a kind of starlight grade high definition day and night confocal optics camera lenses, belong to optical lens technology field, it includes the first lens set gradually from object plane to image planes along optical axis, second lens, the third lens, 4th lens, 5th lens, 6th lens, 7th lens and sensitive chip, diaphragm is set between second lens and the third lens, first lens, second lens, the third lens, 4th lens, 5th lens and the 6th lens are glass spherical lens, 7th lens are plastic aspheric lenes, first lens, second lens, the third lens, 4th lens, 5th lens, the focal length of 6th lens and the 7th lens is successively negative, just, it is negative, just, just, it is negative, just.Optical lens of the present invention not only can change the deficiencies of eyeglass number in this optical lens is more, the resolution ratio under large aperture is unsatisfactory, can also reduce camera lens volume, while can reduce production cost again.
Description
Technical field
The invention belongs to optical lens technology field more particularly to a kind of starlight grade high definition day and night confocal optics camera lenses.
Background technique
Traditional camera lens is under the auxiliary of infrared light filling technology, although can be clearly imaged under low-light (level), only
Can be at black white image, and using after infrared light filling, the object of Gao Fanguang is but easy overexposure, therefore clear under low-light (level)
Colour imaging demand is more and more.With the appearance for the progress and high sensitive chip for seeing science and technology, the development step of safety-security area is not yet
Disconnected to accelerate, various intelligent high-definition video cameras are used widely in every field.Therefore, it develops and is obtained clearly under low light condition
The starlight grade camera lens of clear bright colored picture becomes a kind of inexorable trend.Although there is some starlight grades, infrared confocal in the market
Optical lens is shown up prominently, but more or less has that volume is big, and eyeglass number is more, at high cost or infrared confocal undesirable etc. lack
It falls into.
The patent document of Publication No. CN104614842A discloses a kind of five chip imaging lens groups, by object side to image side
It is disposed with lenses one, lenses two, diaphragm, lenses three, lenses four, lenses five, glass filter
Mating plate and imaging surface, the lenses one, lenses two, lenses three, lenses four and lenses five are equal
For glass lens, the lenses one are negative refracting power lens；The lenses two are positive refracting power lens；It is described
Lenses three be concave-convex lens, and concave surface is towards object space, and convex surface is towards image space；The lenses four are lenticular
Mirror；The lens five are concave-convex lens, and concave surface is towards object space, and convex surface is towards image space；Optical system uses full glass lens
Element improves the stability under high and low temperature environment；The invention is that large aperture system can be improved the imaging energy under low light environment
Power；Using five slice structures, structure is simple, can effectively reduce cost, shortens optics overall length.But the imaging lens group exists
Imaging resolution under low light condition is lower, infrared confocal undesirable.
The patent document of 105676424 A of Publication No. CN discloses a kind of large aperture high definition wide-angle optical lens, including
Object space and image planes are successively arranged the first lens, the second lens, the third lens and the 4th lens, third between object space and image planes
It is equipped with diaphragm between lens and the 4th lens, optical filter is equipped between the 5th lens and image planes.The invention field angle is big, relative opening
Diameter is larger, preferable imaging effect can be shot in the weaker situation of light, high resolution, lens wearer quantity is few, quality
Gently, at low cost, it is convenient for large batch of production and use.But resolution ratio of the optical lens under low light environment is only capable of reaching
2000000 pixels, resolution ratio is to be improved, while infrared confocal effect is undesirable.
The patent document of Publication No. CN106772952A discloses a kind of eyeglass applied to Train-borne recorder camera
Group, structure include the preposition lens set (1) with positive diopter being arranged successively from object plane to image planes, diaphragm (2), have
The postposition lens set (3) and optical filter (4) of positive diopter, the preposition lens set (1) pass through diaphragm (2) and postposition lens set
(3) it connects, the diaphragm (2), postposition lens set (3) be connected with optical filter (4), and the preposition lens set (1) includes the
One lens (11), the second lens (12), first lens (11) are fixedly connected with the first lens (11), the postposition lens set
It (3) include the third lens (31), the 4th lens (32), the 5th lens (33), the 6th lens (34), the third lens (31) are logical
It crosses the 4th lens (32) to connect with the 5th lens (33), the 5th lens (33) are connected with the 6th lens (34), the filter
Mating plate (4) includes anti-reflection film (41), infrared cut coating (42), and the anti-reflection film (41) is set on the left of infrared cut coating (42), institute
The first lens (11) are stated equipped with compound anti-reflection film one (111), second lens (12) are equipped with compound anti-reflection film two
(121), the third lens (31) are equipped with compound anti-reflection film three (311), and the 4th lens (32) are equipped with compound anti-reflection
Film four (321), the 5th lens (33) are equipped with compound anti-reflection film five (331), and the 6th lens (34) are equipped with compound anti-reflection
Film six (341).The advantageous effect of the invention is: by plating one layer of anti-reflection film on all lens entrance surfaces of lens group, so that
The reflectivity of lens reduces, and greatly inhibits reflected light, increases transmitted intensity, reduces reflection of the light between lens,
Eliminate or reduce veiling glare ghost, keep camera imaging apparent, and by optical filter towards image planes surface plate one layer it is red
Outer cut film, weakening infrared light influences image quality, effectively increases camera quality, by reasonable lens combination, has
Effect reduces the susceptibility of camera lens, and lens material relative moderate is suitble to manufacture, effectively reduces cost.But the eyeglass
Structure is complicated for group, increases processing difficulty, and camera imaging resolution ratio is lower.
Summary of the invention
In order to overcome deficiency present in large aperture, infrared confocal optics camera lens, the present invention will provide a kind of large aperture, red
Outer confocal optics camera lens, optical lens of the present invention not only can change that eyeglass number in this optical lens is more, point under large aperture
The deficiencies of resolution is unsatisfactory can also reduce camera lens volume, while can reduce production cost again.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
A kind of starlight grade high definition day and night confocal optics camera lens, including set gradually from object plane to image planes along optical axis first thoroughly
Mirror, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and sensitive chip, described second thoroughly
Diaphragm, first lens, the second lens, the third lens, the 4th lens, the 5th lens and are set between mirror and the third lens
Six lens are glass spherical lens, and the 7th lens are plastic aspheric lenes, first lens, the second lens, third
Lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens focal length be followed successively by it is negative, positive, negative, positive, positive and negative, just.
Preferably, first lens are negative meniscus lens, and second lens are positive meniscus shaped lens, the third
Lens are biconcave lens, and the 4th lens are biconvex lens, and the 5th lens are biconvex lens, and the 6th lens are negative
Meniscus shaped lens, the 7th lens are positive meniscus shaped lens.
Preferably, first lens are low dispersing lens, and second lens are high dispersing lens, the third lens
For high dispersing lens, the 4th lens are low dispersing lens, and the 5th lens are low dispersing lens, and the 6th lens are
Low dispersing lens, the 7th lens are low dispersing lens.
Preferably, the aspherical face type of the 7th lens meets equation:
,
Wherein: c is curvature corresponding to radius, and y is radial coordinate, the unit and length of lens unit phase of radial coordinate
Together, k is circular cone whose conic coefficient；
As k < -1, the face shape curve of lens is hyperbola；
As k=- 1, the face shape curve of lens is parabola；
As -1 < k < 0, the face shape curve of lens is ellipse；
As k=0, the face shape curve of lens is circle；
As k > 0, the face shape curve of lens is oblate；
Respectively indicate coefficient corresponding to each radial coordinate.
Preferably, optical filter and sensitive chip protection glass are set gradually between the 7th lens and sensitive chip.
Preferably, the size of the sensitive chip is 1/2.7 ", resolution ratio is 2,000,000 ~ 4,000,000 pixels.
Compared with prior art, beneficial effects of the present invention are as follows:
The present invention is through the above technical solutions, provide a kind of starlight grade high definition day and night confocal optics camera lens, the optical frames
Head not only overcomes the deficiencies of existing optical lens eyeglass number is more, the resolution ratio under large aperture is unsatisfactory, can be with type minifier
Head volume, while production cost can be reduced again.In optical lens of the present invention, the first lens, the second lens, the third lens,
Four lens, the 5th lens and the 6th lens are glass spherical lens, and the 7th lens are plastic aspheric lenes, the first lens, the
Two lens, the third lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens focal length be followed successively by it is negative, positive, negative, positive,
Positive and negative, just, in this way while selecting suitable eyeglass material, the scientific shape for taking lens reasonably distributes focal power,
Each parameter of lens is mutually compensated, effectively solves camera lens under high temperature or low temperature environment, is divided due to caused by temperature change
Resolution decline or focus drifting problem.Meanwhile also reduce the camera lens under the conditions of infrared with it is existing under visible light conditions
Focus deviation improves infrared resolving power.
Optical lens of the present invention uses large aperture, and FNO. 1.6, field angle can reach 65 ° or more, while also ensure height
Resolution ratio；It is achievable day and night confocal, it realizes 24 hours and monitors；Using Design of Temperature Compensation, work in the environment of -40 DEG C ~+80 DEG C
Make, not defocus；Combined form is moulded using glass, not only ensure that the performance of optical system, and can reduce cost, simplifies knot
Structure mitigates weight, also helps mass production, accord with the demands of the market；While using low-dispersion material, also to diaphragm
Position is optimized, and improves picture image quality.
Detailed description of the invention
Present invention will be described in further detail below with reference to the accompanying drawings.
Fig. 1: the structural schematic diagram of starlight grade high definition of the present invention day and night confocal optics camera lens；
Fig. 2: the spherical aberration curve graph of starlight grade high definition of the present invention day and night confocal optics camera lens；
Fig. 3: the curvature of field and distortion curve of starlight grade high definition of the present invention day and night confocal optics camera lens；
Fig. 4: the chromatic curve figure of starlight grade high definition of the present invention day and night confocal optics camera lens；
Fig. 5: the MTF curve figure of starlight grade high definition of the present invention day and night confocal optics camera lens；
Wherein, the first lens of 1-, the second lens of 2-, 3- the third lens, the 4th lens of 4-, the 5th lens of 5-, 6- the 6th are saturating
Mirror, the 7th lens of 7-, 8- sensitive chip, 9- diaphragm, 10- optical filter, 11- sensitive chip protect glass.
Specific embodiment
For a better understanding of the present invention, the contents of the present invention, but this hair are further fairly set out below with reference to embodiment
Bright protection content is not limited solely to the following examples.In the following description, give a large amount of concrete details so as to
More thorough understanding of the invention is provided.It will be apparent, however, to one skilled in the art that the present invention can be with
It is carried out without one or more of these details.
Refering to fig. 1, a kind of starlight grade high definition day and night confocal optics camera lens, is mixed with plastic lens by 7 pieces of glass and is constituted, and is wrapped
Include the first lens 1, the second lens 2, the third lens 3, the 4th lens the 4, the 5th set gradually from object plane to image planes along optical axis
Diaphragm 9 is arranged in lens 5, the 6th lens 6, the 7th lens 7 and sensitive chip 8 between second lens 2 and the third lens 3.
In above-mentioned optical lens, the first lens 1, the second lens 2, the third lens 3, the 4th lens 4, the 5th lens 5 and
Six lens 6 are spherical lens, and material is glass, and the 7th lens 7 are non-spherical lens, and material is plastic cement.
In above-mentioned optical lens, the first lens 1, the second lens 2, the third lens 3, the 4th lens 4, the 5th lens the 5, the 6th
The focal length of lens 6 and the 7th lens 7 is successively negative, and just, bears, and just, just, bears, just.
In optical lens of the present invention, the first lens 1 are negative meniscus lens, and the second lens 2 are positive meniscus shaped lens, third
Lens 3 are biconcave lens, and the 4th lens 4 are biconvex lens, and the 5th lens 5 are biconvex lens, and the 6th lens 6 are that negative meniscus is saturating
Mirror, the 7th lens 7 are positive meniscus shaped lens.
In optical lens of the present invention, the first lens 1 are low dispersing lens, and the second lens 2 are high dispersing lens, the third lens
3 be high dispersing lens, and the 4th lens 4 are low dispersing lens, and the 5th lens 5 are low dispersing lens, and the 6th lens 6 are that low dispersion is saturating
Mirror, the 7th lens 7 are low dispersing lens.
The aspherical face type of 7th lens 7 meets equation in optical lens of the present invention:
,
Wherein: c is curvature corresponding to radius, and y is radial coordinate, the unit and length of lens unit phase of radial coordinate
Together, k is circular cone whose conic coefficient；
As k < -1, the face shape curve of lens is hyperbola；
As k=- 1, the face shape curve of lens is parabola；
As -1 < k < 0, the face shape curve of lens is ellipse；
As k=0, the face shape curve of lens is circle；
As k > 0, the face shape curve of lens is oblate；
Respectively indicate coefficient corresponding to each radial coordinate.Before accurately lens can be set by the above parameter
Latter two aspherical geomery.
In optical lens of the present invention, the first lens 1 are the low dispersion lens with negative focal power, and its object plane
Side is convex, to can not only import the light of big field angle for camera lens, can also efficiently control axial chromatic aberration；Meanwhile by
In glass lens compared to for glass lens, have the characteristics that high temperature resistant, corrosion-resistant, damage resistant, so as to protect well
Camera lens is camera lens under the factors such as assembly, transport, high temperature, low temperature, Qiang Guang, dust storm, is hardly damaged, so that improves camera lens can
By property.
Second lens 2 are the high-dispersion glass lens with positive focal power, and object plane side and image planes side are recessed to image planes,
The field angle of system can not only be increased, moreover it is possible to well in control system light tendency, so that more luminous energy is entered camera lens.
The distance between the second lens 2 and diaphragm 9 can be increased simultaneously.And to be all made of falcate saturating for the first lens 1 and the second lens 2
Mirror is used cooperatively, and not only can effectively solve the various aberration equalization problems of camera lens, the outer dimension of element after can also reducing.
The third lens 3 are the high-dispersion glass lens with negative focal power, using after diaphragm 9 and close to the saturating of diaphragm 9
The thermally sensitive characteristic of mirror and each power of lens is reasonably distributed, makes system in temperature change, the light of whole system
Focal power has the variable quantity of very little, effectively improves the decline of the systemic resolution as caused by temperature change.It simultaneously can also be effective
The effective aperture and optic back focal for controlling camera lens front end, eliminate the senior aberration and distortion aberration of system.
4th lens 4 are the low dispersion lens with positive light coke, and the third lens 3 and 4 gluing of the 4th lens use,
Play the effect of cemented doublet correction color difference and spherical aberration.The object side of the third lens 3 is convex to image planes, can not only make edge-light
Line and chief ray have preferable collimation, while also ensuring chief ray to the inclination angle of optical axis；The image side of 4th lens 4 towards
Image planes are convex, and the field angle of optical system equally can be improved in this way, additionally it is possible to the curvature of field of correction system well, while can mention
The resolution ratio of high image plane center and edge.
5th lens 5 are the low dispersion lens with positive light coke, and the 6th lens 6 are the low colors with negative power
Glass lens, the 5th lens 5 and the glued use of the 6th lens 6 are dissipated, system color difference and spherical aberration are compensated again.Meanwhile the
After five lens 5 and 6 gluing of the 6th lens, it is equivalent to the biconvex lens of a low dispersion, to control periphery key light well
Line is incident on the angle of the 7th lens 7, improves periphery illumination, while the balanced aberration of energy, provides possibility to reach optimum image plane.
7th lens 7 are the low dispersion aspherical plastic lens with positive light coke.The object side and image side of 7th lens 7
The face type in face be it is oblate, circular cone whose conic coefficient is all satisfied k > 0.The object side of 7th lens 7 and image side surface are to image planes
It is recessed, it not only can balanced various aberrations, moreover it is possible to so that more luminous energy enter image planes, improve the periphery illumination of image planes.
In order to reduce angle change when light reflects between each lens, reduce the distortion of imaging, therefore in structure
Reduce the distance between the first lens 1 and the second lens 2 as much as possible, increase between the second lens 2 and the third lens 3 away from
From.
At the same time, the camera lens is while selecting suitable eyeglass material, the scientific shape for taking lens, and reasonable point
With focal power, each parameter of lens is mutually compensated, effectively camera lens is solved under high temperature or low temperature environment, due to temperature change
Caused resolution ratio decline or focus drifting problem.Meanwhile also reduce the camera lens under the conditions of infrared with visible light conditions
Lower existing focus deviation, improves infrared resolving power.
Moreover, the camera lens is used cooperatively by high and low chromatic dispersion material, the secondary light as caused by infrared light is corrected well
Spectrum, optimize axial chromatic aberration so that camera lens under the conditions of white light and infrared light, can be obtained in image planes clearly as, thus
Meet infrared confocal requirement.
Wherein: the focal length of the first lens 1 is -10 ~ -5mm；The focal length of second lens 2 is 7 ~ 12mm；The coke of the third lens 3
Away from for -4 ~ -6mm；The focal length of 4th lens 4 is 3 ~ 6mm；The focal length of 5th lens 5 is 6 ~ 8mm；The focal length of 6th lens 6 be-
10~-17mm；The focal length of 7th lens 7 is 150 ~ 200mm.And the third lens 3 and the combined focal length of the 4th lens 4 be -60 ~ -
40mm；The combined focal length of 5th lens 5 and the 6th lens 6 is 6 ~ 11mm.
In addition, the optical lens is designed using wide spectrum, chromatic aberration correction is carried out in 400nm ~ 700nm spectral region, no
But keeps image color beautiful and sharp keen, also there is good color reducibility, observe the effect of imaging directly closer to human eye
Effect.Meanwhile the near infrared spectrum aberration of 800nm ~ 940nm is also corrected, realize infrared confocal effect.
And sensitive chip 8 is equipped with behind the 7th lens 7, the resolution ratio of the sensitive chip can satisfy 200 ~ 6,000,000 pixels
Different require.Meanwhile sensitive chip 8 is equipped with behind the 7th lens 7, and it is also equipped with optical filter 10, it not only can be to sensitive chip
It plays a protective role, while the veiling glare outside required wave band can be filtered, to improve image quality.
In addition, having fully considered the introduced aberration of sensitive chip protection glass 11, and in design process in design
In corrected, to improve the quality of camera lens.
In the following, enumerate a field angle be 65 °, resolution ratio be 4,000,000 pixels, mechanical overall length be 22.5mm within, can-
The actual design embodiment worked normally in the environment of 40 DEG C ~+80 DEG C:
1 system data of table
2 asphericity coefficient of table
In above-mentioned Tables 1 and 2:
What face number 1 and 2 respectively indicated is the first face and the second face of the first lens 1, and the material of the first lens 1 is H-
LAK4L；
What face number 3 and 4 respectively indicated is the first face and the second face of the second lens 2, and the material of the second lens 2 is H-
ZF52；
What face number 6 and 7 respectively indicated is the first face and the second face of the third lens 3, and the material of the third lens 3 is H-
ZF1；
What face number 7 and 8 respectively indicated is the first face and the second face of the 4th lens 4, and the material of the 4th lens 4 is H-
ZPK1A；
What face number 9 and 10 respectively indicated is the first face and the second face of the 5th lens 5, and the material of the 5th lens 5 is H-
ZPK1A；
What face number 10 and 11 respectively indicated is the first face and the second face of the 6th lens 6, and the material of the 6th lens 6 is H-
QF6A；
What face number 12 and 13 respectively indicated is the first face and the second face of optical filter 9, and the substrate material of optical filter 9 is
K26R；
What face number 14 and 15 respectively indicated is the first face and the second face of optical filter 10, and the substrate material of optical filter 10 is
H-K9L；
Wherein, first face refers to the one side towards object plane side, and the second face refers to the one side towards image planes.
By using above technical scheme, Fig. 2, Fig. 3, figure 4 and figure 5 respectively show the spherical aberration curves of optical lens, field
Bent and distortion curve, chromatic curve and MTF curve, as seen from the figure, the spherical aberration of optical lens of the present invention be remedied to ± 0.04mm with
Interior, spherical aberration correction obtains relatively good in spectral bandwidth, can increase the tidiness of camera lens real scene shooting picture in this way；It is aspherical due to using
Eyeglass, astigmatism and the curvature of field can be remedied to suitable range, enable the resolving power phase of the resolving power of meridian and sagitta of arc direction
Closely；Chromatic longitudiinal aberration, with respect to chromatic longitudiinal aberration within 2 μm, g light chromatic longitudiinal aberration can meet camera lens within 5 μm for f light, d light, c light
Solution is as quality requirements；MTF curve figure, the camera lens have an excellent resolving power, within central vision and 0.7 visual field,
The spatial frequency of 200cycles/mm has higher acutance.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, this field is common
Other modifications or equivalent replacement that technical staff makes technical solution of the present invention, without departing from technical solution of the present invention
Spirit and scope, be intended to be within the scope of the claims of the invention.
Claims (4)
1. a kind of starlight grade high definition day and night confocal optics camera lens, it is characterised in that: including successively being set from object plane to image planes along optical axis
The first lens, the second lens, the third lens, the 4th lens, the 5th lens, the 6th lens, the 7th lens and the sensitive chip set,
Diaphragm, first lens, the second lens, the third lens, the 4th lens, are set between second lens and the third lens
Five lens and the 6th lens are glass spherical lens, and the 7th lens are plastic aspheric lenes, first lens, second
Lens, the third lens, the 4th lens, the 5th lens, the 6th lens and the 7th lens focal length be followed successively by it is negative, positive, negative, positive, just,
It is negative, positive,
First lens are negative meniscus lens, and second lens are positive meniscus shaped lens, and the third lens are concave-concave
Lens, the 4th lens are biconvex lens, and the 5th lens are biconvex lens, and the 6th lens are that negative meniscus is saturating
Mirror, the 7th lens are positive meniscus shaped lens,
First lens are low dispersing lens, and second lens are high dispersing lens, and the third lens are that high dispersion is saturating
Mirror, the 4th lens are low dispersing lens, and the 5th lens are low dispersing lens, and the 6th lens are that low dispersion is saturating
Mirror, the 7th lens are low dispersing lens.
2. starlight grade high definition according to claim 1 day and night confocal optics camera lens, it is characterised in that: the 7th lens
Aspherical face type meets equation:
,
Wherein: c is curvature corresponding to radius, and y is radial coordinate, and the unit of radial coordinate is identical with length of lens unit, and k is
Circular cone whose conic coefficient；
As k < -1, the face shape curve of lens is hyperbola；
As k=- 1, the face shape curve of lens is parabola；
As -1 < k < 0, the face shape curve of lens is ellipse；
As k=0, the face shape curve of lens is circle；
As k > 0, the face shape curve of lens is oblate；
Respectively indicate coefficient corresponding to each radial coordinate.
3. starlight grade high definition according to claim 2 day and night confocal optics camera lens, it is characterised in that: the 7th lens with
Optical filter and sensitive chip protection glass are set gradually between sensitive chip.
4. starlight grade high definition according to claim 3 day and night confocal optics camera lens, it is characterised in that: the sensitive chip
Having a size of 1/2.7 ", resolution ratio is 2,000,000 ~ 4,000,000 pixels.
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| CN108663783B (en) * | 2018-08-28 | 2023-10-10 | 深圳市特莱斯光学有限公司 | Large-aperture low-cost panoramic fisheye lens |
| CN109001894B (en) * | 2018-10-22 | 2024-02-06 | 厦门爱劳德光电有限公司 | Small-distortion high-low-temperature-resistant prime lens |
| CN109298510B (en) * | 2018-11-21 | 2023-09-22 | 福建福光股份有限公司 | Zero parallax optical image detection system and imaging method |
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| SU134468A1 (en) * | 1959-08-31 | 1959-11-30 | М.И. Кузьмина | Anochromatic filming lenses for the TKS-3 stunt camera |
| JP2856464B2 (en) * | 1989-08-03 | 1999-02-10 | 株式会社リコー | Plastic zoom lens |
| KR101390089B1 (en) * | 2011-02-02 | 2014-04-28 | 주식회사 나노포토닉스 | Fisheye lens |
| JP6090650B2 (en) * | 2012-11-19 | 2017-03-08 | 株式会社リコー | Imaging lens, imaging device, and information device |
| KR101659167B1 (en) * | 2014-10-16 | 2016-09-22 | 삼성전기주식회사 | Optical system |
| CN105467565A (en) * | 2015-12-19 | 2016-04-06 | 中山联合光电科技股份有限公司 | High-and-low temperature infrared confocal high pixel little-distortion small-volume zooming optical system |
| CN107305275B (en) * | 2016-04-25 | 2019-10-22 | 杭州海康威视数字技术股份有限公司 | A kind of optical lens, graph capture device and monitoring system |
| CN105911677B (en) * | 2016-06-30 | 2018-01-05 | 湖南拓视觉信息技术有限公司 | Near-infrared large aperture camera lens |
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